* {
  padding: 0;
  margin: 0;
  list-style: none;
  text-decoration: none;
}

a {
  color: #000;
}

.flex {
  display: flex;
  justify-content: center;
  align-items: center;
}

header .w {
  position: fixed;
  top: 0;
  width: 100vw;
  height: 17.33333vw;
  background-color: #fff;
  z-index: 1;
}

header .w .top {
  display: flex;
  justify-content: space-between;
  width: 94vw;
  height: 17.33333vw;
  margin-left: 3.06667vw;
}

header .w .top .back {
  width: 16.4vw;
  height: 7.6vw;
  border: 0.4vw solid #ff9344;
  font-size: 3.46667vw;
  text-align: center;
  line-height: 7.6vw;
  border-radius: 2.66667vw;
  margin-top: 6.4vw;
}

header .w .top h3 {
  font-size: 3.46667vw;
  margin-top: 8.53333vw;
}

header .w .top .sel {
  position: relative;
  margin-top: 6.26667vw;
}

header .w .top .sel > select {
  width: 21.33333vw;
  height: 8vw;
  border: 0.13333vw solid #ff9344;
  box-sizing: border-box;
  appearance: none;
  -webkit-appearance: none;
  font-size: 3.46667vw;
  text-indent: 2.26667vw;
  background-color: #fff;
}

header .w .top .sel > i {
  position: absolute;
  top: 2.66667vw;
  right: 1.33333vw;
  width: 0;
  height: 0;
  border: 2.66667vw solid transparent;
  border-top: 2.66667vw solid #ff9344;
  pointer-events: none;
}

header .nav1 {
  margin-top: 17.33333vw;
  display: flex;
  flex-flow: wrap;
  width: 100vw;
  height: 31.46667vw;
}

header .nav1 .up {
  width: 100.26667vw;
  overflow: auto;
}

header .nav1 .up > ul {
  width: 401.06667vw;
  font-size: 0;
}

header .nav1 .up > ul > li {
  display: inline-block;
  list-style: none;
}

header .nav1 .up > ul > li > div {
  display: inline-block;
  margin: 0 2.53333vw;
}

header .nav1 .up img {
  width: 20vw;
  height: 20vw;
}

header .nav1 .up h5 {
  font-size: 3.46667vw;
  text-align: center;
}

header .nav1 .dot {
  margin-left: 40vw;
}

header .nav1 .dot input {
  display: none;
}

header .nav1 .dot .lable {
  display: inline-block;
  width: 2.4vw;
  height: 2.4vw;
  border-radius: 50%;
  margin-right: 0.93333vw;
  background-color: #ff9344;
  opacity: 0.5;
}

header .nav1 .dot > input[type="radio"]:nth-of-type(1):checked ~ .controls .lable:nth-of-type(1) {
  opacity: 1;
}

header .nav1 .dot > input[type="radio"]:nth-of-type(2):checked ~ .controls .lable:nth-of-type(2) {
  opacity: 1;
}

header .nav1 .dot > input[type="radio"]:nth-of-type(3):checked ~ .controls .lable:nth-of-type(3) {
  opacity: 1;
}

header .nav1 .dot > input[type="radio"]:nth-of-type(4):checked ~ .controls .lable:nth-of-type(4) {
  opacity: 1;
}

main {
  display: flex;
  flex-flow: wrap;
}

main .box {
  margin-bottom: 6.93333vw;
}

main .box .title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 93.33333vw;
  height: 10.66667vw;
  margin-left: 4vw;
}

main .box .title .lt {
  font-size: 4vw;
}

main .box .title .lt img {
  width: 7.2vw;
  vertical-align: sub;
}

main .box .title .gt {
  font-size: 3.2vw;
}

main .box .title .gt img {
  width: 3.33333vw;
  height: 3.33333vw;
}

main .box .img {
  display: flex;
  justify-content: space-between;
  width: 94vw;
  margin-left: 2.93333vw;
}

main .box .img img {
  width: 17.73333vw;
  height: 17.73333vw;
}

main .dn {
  text-align: center;
  font-size: 3.2vw;
  width: 100vw;
}

nav {
  display: flex;
  position: sticky;
  bottom: 0;
  justify-content: space-around;
  align-items: center;
  width: 100vw;
  height: 16vw;
  background-color: #fff;
  text-align: center;
}

nav img {
  width: 9.73333vw;
}

nav h5 {
  font-size: 3.46667vw;
  font-weight: 400;
}
